A370768 - cp's OEIS frontend

A370768 Number of signed permutations of length n+2 with adjacent elements differing by more than 1 whose first element is 1 and whose last element has absolute value n+2.

n	a(n)
0	1
1	1
2	5
3	29
4	249
5	2553
6	31181
7	441845
8	7133569
9	129304593
10	2600559125
11	57473713741
12	1384615153033
13	36115750475433
14	1014026439534045
15	30493381288216357
16	977824818833573137
17	33307253433327375809
18	1201023016203128722725
19	45705676512051750367357

[1, 1, 5, 29, 249, 2553, 31181, 441845, 7133569, 129304593, 2600559125, 57473713741, 1384615153033, 36115750475433, 1014026439534045, 30493381288216357, 977824818833573137, 33307253433327375809, 1201023016203128722725, 45705676512051750367357]

cp's OEIS Frontend

A370768 Number of signed permutations of length n+2 with adjacent elements differing by more than 1 whose first element is 1 and whose last element has absolute value n+2.

Table of values

List of values